When reacted with dilute hydrochloric acid solution ,which of the the following gives a colorless gas
which when passed through lime water turns it milky:
a) zinc metal b) sodium carbonate
c) sodium hydroxide d) blue litmus solution

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Solution

1. On reaction with Zinc metal, hydrogen gas is liberated which is a colourless one.
Zn + 2 HCl ------> ZnCl₂ + H₂
2. On reaction with Sodium carbonate dil HCl liberates Carbondioxide which turns lime water milky.
2HCl + Na₂CO₃ ------> 2 NaCl + CO₂ + H₂O
Ca(OH)₂+ CO₂ ------> CaCO₃+ H₂O

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When reacted with dilute hydrochloric acid solution ,which of the the following gives a colorless gas which when passed through lime water turns it milky: a) zinc metal b) sodium carbonate c) sodium hydroxide d) blue litmus solution

1. On reaction with Zinc metal, hydrogen gas is liberated which is a colourless one. Zn + 2 HCl ------> ZnCl2 + H2 2. On reaction with Sodium carbonate dil HCl liberates Carbondioxide which turns lime water milky. 2HCl + Na2CO3 ------> 2 NaCl + CO2 + H2O Ca(OH)2 + CO2 ------> CaCO3 + H2O

When reacted with dilute hydrochloric acid solution ,which of the the following gives a colorless gas
which when passed through lime water turns it milky:
a) zinc metal b) sodium carbonate
c) sodium hydroxide d) blue litmus solution